Good morning.
I read that post, just when I was revisiting Inkscape at my fourth attempt. Having no idea of panels, and waiting for unification and canvas develop further progress. I decided not to mesh me into an out of my scope issue, as I'm not programmer neither a skill designer. However sometimes with my old pc I changed some instruments textures, but just change it without to test them because is very old PC at 800 mghz, due that I can't run FG
About instruments, with my very poor experience in inkscape I found that is more reliable to use free cad or blender in order to have more accuracy according to the blue prints, scales, size and dimensions of the object. Other times I dive into textures that I cannot understand, they are flipped and mapped in some logic way, so they maybe were been generated by those programs by mapping.
The main problem I found was in how to implement the FG's instrument collection if I have no 3d control, even don't know how the magic occurs. I reach the conclusion that he have to reuse elements, but is quite complex. For example the plates of the figurative 727 OH panels, do not satisfied any real dimension in my draw, if we could have access to the real dimensions we could reuse plates, also switches turns and bolts, etc. However the number of different elements is huge and diverse as every aircraft has their own avionics scheme layer and so on. If we take account of the number of gadgets and displays, I can only feel panic.
In all cases I feel you have magic, you projects are awesome. Chapeau for all. I'm a lover of the 2D panels, while to have a 3d animation on the phone to manage controls is really awesome metaverso.
I'll continue training.